Finding the Fourth Proportional to 56,770,978.86, 78,343,982.32 and 30,665,496.84

Step by Step Solution

1. Step 1: Write the proportion equation
   56,770,978.86 : 78,343,982.32 = 30,665,496.84 : x
2. Step 2: Convert to fraction form
   56,770,978.86/78,343,982.32 = 30,665,496.84/x
3. Step 3: Cross multiply
   56,770,978.86x = 78,343,982.32 × 30,665,496.84
4. Step 4: Simplify right side
   56,770,978.86x = 2,402,457,141,721,928.50
5. Step 5: Solve for x
   x = 2,402,457,141,721,928.50/56,770,978.86
6. Step 6: Final answer
   x = 42,318,402.64